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Add sharding manager

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This commit is contained in:
Amish Shah 2016-09-04 12:21:02 +01:00
parent 906672e538
commit b1a25bd176
4 changed files with 2 additions and 68 deletions
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2
docs/docs.json
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File diff suppressed because one or more lines are too long

39
src/sharding/Shard.js
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@ -1,48 +1,11 @@
const childProcess = require('child_process'); const childProcess = require('child_process');
const path = require('path'); const path = require('path');
const crypto = require('crypto');
class Shard { class Shard {
constructor(manager, id) { constructor(manager, id) {
this.manager = manager; this.manager = manager;
this.id = id; this.id = id;
this.process = childProcess.fork(path.resolve(this.manager.file), [id, this.manager.shards.size], { silent: true }); this.process = childProcess.fork(path.resolve(this.manager.file), [id, this.manager.shards.size]);
this.waitingForResponse = new Map();
this.process.on('message', m => {
if (m && m.type && m.id) {
if (this.waitingForResponse.get(m.id)) {
const resp = this.waitingForResponse.get(m.id);
resp.resolve(m.data);
this.waitingForResponse.delete(m.id);
} else {
const reply = data => {
this.send(m.id);
}
}
}
});
}
send(type, timeout = 60000, data = {}) {
const id = crypto.randomBytes(16).toString('hex');
this._send(id, type, timeout, data);
}
_send(id, type, timeout, data) {
return new Promise((resolve, reject) => {
this.process.send({
type,
id,
data,
});
this.waitingForResponse.set(id, {
resolve,
});
setTimeout(() => {
reject(new Error('did not receive response'));
this.waitingForResponse.delete(id);
}, timeout);
});
} }
} }

28
src/sharding/ShardListener.js
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@ -1,28 +0,0 @@
const crypto = require('crypto');
class ShardListener {
constructor() {
this.waitingForResponse = new Map();
this.process = process;
}
send(type, timeout = 60000, data = {}) {
return new Promise((resolve, reject) => {
const id = crypto.randomBytes(16).toString('hex');
this.process.send({
type,
id,
data,
});
this.waitingForResponse.set(id, {
resolve,
});
setTimeout(() => {
reject(new Error('did not receive response'));
this.waitingForResponse.delete(id);
}, timeout);
});
}
}
module.exports = ShardListener;

1
src/sharding/ShardingManager.js
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@ -3,7 +3,6 @@ const path = require('path');
const EventEmitter = require('events').EventEmitter; const EventEmitter = require('events').EventEmitter;
const Collection = require('../util/Collection'); const Collection = require('../util/Collection');
const Shard = require('./Shard'); const Shard = require('./Shard');
const crypto = require('crypto');
class ShardingManager extends EventEmitter { class ShardingManager extends EventEmitter {
constructor(file, totalShards) { constructor(file, totalShards) {